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Nondestructive Characterization of Porous Ceramics by X-Ray Refraction

  • X-ray refraction reveals the inner surface concentrations of porous materials within the range of (µm- to nm-dimensions. This technique is compared to mercury pressure porosimetry which is a standard method for pore size determination in porous solids. The mean pore size of several ceramics are investigated over a range of porosity between 30% to 60%. Complementary to high pressure mercury intrusion the refraction technique detects the spatially resolved inner surfaces of both, open and closed pores. Furthermore, X-ray refraction scanning topography visualizes integral interface properties up to 50 m spatial resolution by two-dimensional topographic images. Characteristic microstructure parameters, i. e. inner surface density, porosity and mean pore sizes of some Al2O3 and SiC ceramics are presented. The specific surface data of Al2O3 ceramics obtained from X-ray refraction agree well with the results given by mercury porosimetry. In contrast, the related mean pore sizes differsX-ray refraction reveals the inner surface concentrations of porous materials within the range of (µm- to nm-dimensions. This technique is compared to mercury pressure porosimetry which is a standard method for pore size determination in porous solids. The mean pore size of several ceramics are investigated over a range of porosity between 30% to 60%. Complementary to high pressure mercury intrusion the refraction technique detects the spatially resolved inner surfaces of both, open and closed pores. Furthermore, X-ray refraction scanning topography visualizes integral interface properties up to 50 m spatial resolution by two-dimensional topographic images. Characteristic microstructure parameters, i. e. inner surface density, porosity and mean pore sizes of some Al2O3 and SiC ceramics are presented. The specific surface data of Al2O3 ceramics obtained from X-ray refraction agree well with the results given by mercury porosimetry. In contrast, the related mean pore sizes differs systematically by about 30%.zeige mehrzeige weniger

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Metadaten
Autor*innen:Karl-Wolfram Harbich, Elisabeth Fensch-Kleemann, Barbara Röhl-Kuhn, Peter Klobes
Dokumenttyp:Zeitschriftenartikel
Veröffentlichungsform:Eigenverlag BAM
Sprache:Englisch
Titel des übergeordneten Werkes (Englisch):Studies in surface science and catalysis
Jahr der Erstveröffentlichung:2002
Verlag:Elsevier
Verlagsort:Amsterdam
Jahrgang/Band:144
Erste Seite:693
Letzte Seite:699
Veranstaltung:6th International Symposium on the Characterization of Porous Solids (COPS)
Veranstaltungsort:Alicante, Spain
Beginndatum der Veranstaltung:2002-05-08
Enddatum der Veranstaltung:2002-05-11
DOI:10.1016/S0167-2991(02)80198-7
ISSN:0167-2991
Verfügbarkeit des Dokuments:Physisches Exemplar in der Bibliothek der BAM vorhanden ("Hardcopy Access")
Bibliotheksstandort:Sonderstandort: Publica-Schrank
Datum der Freischaltung:19.02.2016
Referierte Publikation:Nein
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